Group Chat STILL Totally Bugging Out

Group Chats are not coming througıh when theyre sent. Ill go all day and not get a bunch of group chat messages, even if I manually go in and refresh the chat, then all of a sudden Ill go in thinking I got one and theres like 30 chats back and forth between friends. Sending snaps to the group thread seems to push it through to actually receive the previous chats, but it obviously shouldnt be that way. And its not just me, all three of my friends with iPhone say theyve been having the same problem the past month or so. Plus, itll say everyones seen my group chat texts, but when i look at other text from others, it says certain people.....how?

ironmantr95 about Snapchat, v10.14.0.0